We prepare the tax computation, file ECI and your Form C-S or Form C with IRAS, and keep every figure documented — so the year-end return is accurate, on time, and defensible.
Every active Singapore company runs an annual corporate income tax cycle with IRAS. For most owner-managed businesses it is not difficult — but it is unforgiving of late or careless work, and the deadlines arrive whether or not the books are ready. Steadbook handles the full cycle: the estimate early in the year, the computation once the accounts close, and the final return by the November deadline.
The headline corporate tax rate in Singapore is 17%, applied to chargeable income rather than to accounting profit. The gap between those two numbers — the tax computation — is where most of the work, and most of the risk, actually sits. We make sure that working is correct, consistent year to year, and supported by documentation you can stand behind.
If tax filing has become a yearly scramble, or you simply want it off your desk, this is for you.
Most filing problems are not exotic. They come from the ordinary places — a deadline that slipped, a computation that was never properly documented, or an exemption claimed without checking the conditions. We see the same handful of issues repeatedly:
If your books are not yet closed, we can take that on too as part of an accounting and tax engagement, so the computation is built on numbers we have reviewed.
ECI within three months of your financial year-end; the tax computation once your accounts close; Form C-S, Form C-S (Lite) or Form C e-filed with IRAS by 30 November. Steadbook runs all three, and keeps the working defensible.
ECI stands for Estimated Chargeable Income — your company's estimate of its taxable profit for the financial year, after deducting tax-allowable expenses. It is filed with IRAS within three months of your financial year-end. Some companies qualify for a filing waiver where the conditions are met, but the safest approach is to confirm whether you are eligible rather than assume it. Filing ECI also sets up your payment timeline, so getting it right early avoids surprises.
Form C-S is a simplified corporate tax return for smaller, qualifying companies, with Form C-S (Lite) being an even shorter version for the smallest cases. Form C is the full return used by companies that do not meet the simplified-filing conditions, and it requires more supporting detail. The form you use depends on your company's circumstances for the year. We assess which form applies before we prepare the submission.
The corporate income tax return — Form C-S, Form C-S (Lite) or Form C — is filed with IRAS by 30 November each year through e-filing. ECI is a separate, earlier obligation due within three months of your financial year-end. We track both dates per client so nothing is left to the last week of November.
A loss-making or dormant company generally still has filing obligations, even when no tax is payable. Losses may be carried forward and used against future profits where the relevant conditions are met, so it is worth preparing the computation properly rather than skipping it. Dormant companies often have lighter requirements, but they are not automatically exempt from filing. We confirm your position with you and file what is required.
Yes. We regularly take over from a previous accountant or in-house bookkeeper. We start by reviewing your last filed return, tax computation and any open correspondence with IRAS, so we understand the basis used before. The handover is straightforward and we keep you informed at each step.
Yes. We prepare the full tax computation from your financial statements — adjusting accounting profit for tax purposes, applying capital allowances and any reliefs you qualify for — and then file the return with IRAS on your behalf. You receive the computation and supporting workpapers, so the basis for every figure is documented and defensible if IRAS reviews it.
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